Crane-brake.



W. J. KRUSE.

CRANE. BRAKEx APPLICATION HLED MAR.2,19'.6.

1,261,245 Patented Apr. 2,1918.

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J. KBA

CRANE-BRKE.

.application led March il, 1916.

fic/tom if may concern he it lmown-that l, WALTER J, Kinross, a citizen oi the United States, and resident oi Chicago, in the county oftloolr andState oft illinois, have invented certain new and useful Improvements in Crane-Brakes, oit which the following is a specification.

.My invention lenticular reference to a novel brake adapted for ase in connection therewith.

It is common practice to provide in. connecticn with the'l hoisting mechanism oi 'traif'eling1 cranes, means ior positively con trolling the lowering movement oit the load, such means ueinp; operative only during the loivcrr .nd not during the raising Inovenient wits the g means being; provided for appli/ina' bra .ling force to the pinion.

` 'n the construction of my deis to provide a lool: applicable to the pinion. as is common, but which. lock shall in the of a trictional engagement betweentivo conical surfaces, there being no positive engagement as between int-ermeshing teeth which. might become broken under an excessive'slioclr. be

more readily underthe accompanying' The inv a vertical section through a constructed in accordance with rig. 2 is a side elevation of one side oi' the construction shown in Fig. 1, While 3 is' a similar View of the opposite side of the construction. l

.ln t" drawings it will be seen that the which may be connected to the drum, is prmfidedl with the on disits 1i, 12, which are operaected to the large gear-13. diese parts operate in a welltlieyfwill not be specically pinion i4. meshes with the is loosely mounted. on a shaft 15, having a squared head 16, which is seated within'a hearing member 1'?. This member 17, as best shown in Fig. and is held Within a similarly shaped recess in the casing 18. The opposite end of the shaft 15 is held Witliina similar bearing member 19, which likewise sh. here n desc..

squared and Specification of Letters Eatent.

relates tocranes, and has- 2, is squared f "een, or crncaeo, immers. y

l'ila'tented Apr. 2, 1218. serial in). 31,622.

fitted within a similar openingin the main casing 18. The pinion 14 is provided on one side with an extension or sleeve 20, hav# ing on .its edges pair of laterally extending' teeth, which are formed by the shoulder 2 andthe inclined plane A separate sleeve 23. slidably mounted on the shaft 15, is provided on its larger end with teethv similar to but `oppositely disposed with relation tothe teeth formed on the sleeve 20. The periphery of the sleeve 23 is'in the form of a cone and is intended to t Within the conical recess 24, formed Within the bearing inember 17. This recess 24 may be lined with a non-burning material, it' desired. On the opposite side of the pinion 1411 is a short eX- tension, or sleeve, 25, which bears against a combined thrustwasher and bushing 26. A /clanipnut 27 is secured on the threaded outer and ot' the shaft 15. This nut may be actuated to move the pinion 14 to the left, as viewed in Fig. 1, to compensate for any wear which may take place.

The operation is as folloWsz Assuming the parts to be in the position of Fignl, which is the position they Would assume While a load was being lifted, if the pinion is rotated'in the direction of the arrow, it will be seen that the inclined surfaces 22 on the sleeve 2() and sleeve 23 will tend to .torce the latter sleeve into. engagementw'ith the surfaces of the conical recess 24C and thereby' to locltthe sleeve and the pinion 1l against further rotation. This will tend to lock the large gear 13 against rotation, and the lowering of the load will be con-` trolled by. the frictional slipping of the disks 11, 12, as required. However, as soon as the lowering action is completed and the motor is reversed, the shoulders 21 on the sleeve. will .be brought sharply into contact and the cone 23 will `be loosened from engagement with the Walls of the recess and the lifting or elevating movement. will be free of restraint.

The parts 'are very simple and vcannot readilyY become. out of vorder. Means-are provided occur, and the at all timesL 1. In a crane brake, the combination of a casing ',aVing .a 'substantially conical seat, a brake gear mounted in Said casing, a pinion in constant-engagement with said gear, a cone clutch member associated .with said parts' will operate as desired for taking 'up any Wear Which may A brake rear 'a iinion in en aoanient thereconical seat and said pinion, and means carried by said pinion for forcing said clutch member into engagement with the seat on one direction of rotation of said pinion and disengaging the saine in an opposite direction of rotation, substantially as described. 2. In a crane brake, the combination of a brake gear, a pinion, a cone clutch associated with said pinion, said cone clutch including a. stationary seat and a movable friction member cooperating with the seat, and wedge means associated with the movable clutch member and said pinion and adapted to torce said movable clutch member into engagement with the fixed member on one direction ot'rotation of said pinion, substantially as described.

3. In a crane' brake,the combination of a With, va shaft upon which said pinion is mounted, a casing providingl bearings' tor said shaft, one of said bearing members having a. conical recess, a conical sleeve loosely `mounted on said shaft and adapted to co operate with said recess, and cooperating teeth on said conical sleeve and said pinion whereby said conical surfaces are forced into engagement on one'direction ot' rotation of said pinion and disengaged ou 4rotation in the opposite direction. substantially as described. 4

4. In a crane brake, the combination ot a g brake gear, a pinion meshing therewith. a

sha-ft upon which said pinion is mounted, a. casing supportingl said shaft. a hxed bearing member held in said casing and providing a conical recess, a com :al sleeve looselyv mounted on said shaft, said sleeve and said i pinion being provided with oppositely'tlis movable clutch member and said pinion, said" surfaces being disposed in suchmanner as -to canse the locking of said pinion when rotated in one ldirection and permit freedom of movement when rotated in an opposite direction, substantially as described.

6. The combination ol a shaft, a gear mounted on the shaft, friction members carw ried by thc shaft and Africtionall)Y engaging opposite sides ot' the gear, a pinion in mesh with the gear. a pinion housing, a clutch member carried by the pinion, a rotatable and endwise movable tapered `'friction clutch member. the tn'o clutch members being associated for snnnltaneons rotation in one dil/Vitncsses W. d. WVn'rn, D. V. Mnnamn.

WALTER. J'. Knapen 

